keep display type (thumbnail/list/table) even if selection on left changes

Former-commit-id: 537009695364ebc48df8cb8d8472581c3a64c516

ippisite/ippidb/templates/compound_list.html

@@ -35,6 +35,7 @@
   {% include "multiselection_list_menu.html" with label="Disease" selected_list=selected_diseases unselected_list=diseases param_name="disease" all_param_name="diseases_all" all_param_value=diseases_all %}
   {% include "multiselection_list_menu.html" with label="Organism" selected_list=selected_taxonomies unselected_list=taxonomies param_name="taxonomy" all_param_name="taxonomies_all" all_param_value=taxonomies_all %}
   {% include "multiselection_list_menu.html" with label="Bound complex" selected_list=selected_boundcomplexes unselected_list=boundcomplexes param_name="boundcomplex" all_param_name="boundcomplexes_all" all_param_value=boundcomplexes_all %}
+  <input type="hidden" name="display" value="{{ display }}" />
 </form>
 </div>